Features and Benefits:�The premium detectable tape used for location and early warning protection for underground lines�Middle foil layer allows for both inductive and conductive locating�Multi-layer construction offers virtual permanence of message, strength and locatability�Shallow buried six to twelve inches below finished grade, MAGNATEC® can be located reliably witheven the least sophisticated metal detectorsEmpire 31-151 is a premium, 3-layer, detectable underground tape that is used for locating and protecting underground utilities. It has a foil, middle layer that can be detected through conductive or inductive methods, as deep as 36 in. with proper detection equipment. This product is proudly made in the U.S.A with environmentally safe materials to meet different regulations. Meets APWA color requirements with vivid and long-lasting color. More options and customization available upon request.